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Protect PDF

Encrypt and secure PDF documents with a strong password.

AES encryption with permission controls for printing and copying.

PDF

Select Your PDF Document

Drag and drop your file here, or tap to browse

Accepted formats: PDF

🔒 Private & Secure: Processing happens client-side in your browser. Nothing is uploaded to any server.

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Unlock PDF

Remove password security and restriction locks from PDF files.

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Permanently blackout sensitive text, images, or data in PDF files.

Guide & Tutorial

How to Password Protect a PDF Online — Free PDF Encryption Tool

Protecting a PDF with a password prevents unauthorized access to sensitive documents. Free PDF Maker's Protect PDF tool encrypts your PDF files with AES password protection — for free, instantly, and privately in your browser.

Step-by-Step Guide

  1. 1

    Upload Your PDF

    Select the PDF you want to password-protect.

  2. 2

    Set Your Password

    Enter a strong password. Choose permission settings for printing and copying.

  3. 3

    Encrypt and Download

    Click 'Protect PDF →' and download your encrypted, password-protected file.

Frequently Asked Questions

What type of encryption is used?

Free PDF Maker uses AES-128/256 encryption, the industry standard for PDF password protection.

Can I set different passwords for opening and editing?

Yes. You can set an owner password that restricts editing/printing separately from the open password.

Is my password safe?

All encryption happens locally in your browser. Your password is never sent to any server.

Why Use Free PDF Maker?

  • AES encryption for strong document security
  • Set separate open password and permission restrictions
  • Control printing and copying permissions
  • Free with no sign-up
  • 100% private — encryption happens in your browser

Ready to Protect PDF?

Keep your sensitive documents secure. Free PDF Maker lets you password protect PDFs online for free with enterprise-grade AES encryption.

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Protect PDF — Free PDF Maker: Keep your sensitive documents secure. Free PDF Maker lets you password protect PDFs online for free with enterprise-grade AES encryption.